[Sync] Update project files from source repository (58880e5)

[mrz1836]

What Changed

• Removed docs from .dockerignore, allowing documentation files to be included in Docker builds
• Updated MAGE_X_VERSION from v1.20.4 to v1.20.7 in .github/env/10-mage-x.env
• Updated MAGE_X_GOLANGCI_LINT_VERSION from v2.9.0 to v2.10.1 in .github/env/10-mage-x.env
• Updated GO_PRE_COMMIT_GOLANGCI_LINT_VERSION from v2.9.0 to v2.10.1 in .github/env/10-pre-commit.env
• Updated GO_COVERAGE_VERSION from v1.3.5 to v1.3.6 in .github/env/10-coverage.env

Why It Was Necessary

• Tooling updates bring bug fixes, performance improvements, and new features from upstream dependencies
• Including docs in Docker images enables documentation to be available in containerized environments
• Keeping CI/CD tooling synchronized ensures consistent linting and coverage behavior across all workflows

Testing Performed

• Verify CI/CD workflows execute successfully with updated tool versions
• Confirm golangci-lint v2.10.1 runs without errors across pre-commit hooks and mage-x automation
• Validate that Docker builds include documentation files as expected after .dockerignore modification

Impact / Risk

• Low risk: Tool version updates are minor releases with backwards compatibility
• No breaking changes: Updates are to development and CI tooling, not production code
• Benefit: Including docs in Docker images improves documentation accessibility in deployed containers